Fotric 340M Series, User Manual

Page: 44 / 102

39
1. Click the relative humidity set button.
2. Slide up and down to set the relative humidity value.
3. Click on other areas of the thermal image screen, or click the back button to
complete setting.
！
Note: For short distances and normal humidity, relative humidity is set to the
default value of the thermal imager.
4.6.5 Setting Measurement Distance
Measurement distance is the distance between the measured object and the lens
of the thermal imager. This parameter is used to compensate for the following
two elements:
• The thermal radiation which the atmosphere air absorbed between the object
and the thermal imager lens.
• Thermal radiation from the atmosphere air itself.